Παραπομπή APA

Guthe & E Carl. (1945). Manual for the study of food habits: Report of the committee on food habits. National academy of science.

Παραπομπή Chicago Style

Guthe και E Carl. Manual for the Study of Food Habits: Report of the Committee on Food Habits. National academy of science, 1945.

Παραπομπή MLA

Guthe και E Carl. Manual for the Study of Food Habits: Report of the Committee on Food Habits. National academy of science, 1945.